时间因素对室内空气甲醛浓度测定结果的影响  

Influence of Time Factor on Detection Result of Indoor Air

作　　者：张小瑜 梁美怡 ZHANG Xiaoyu;LIANG Meiyi(Guangdong Testing Institute of Product Quality Supervision,Guangdong Foshan 528300,China)

机构地区：[1]广东产品质量监督检验研究院,广东佛山528300

出　　处：《广州化工》2024年第20期121-123,共3页GuangZhou Chemical Industry

摘　　要：甲醛是目前人们经常会接触到的一种室内污染物,精准的甲醛检测也越来越受到社会各界的重视,本文通过对室内空气甲醛浓度两种测定方法:酚试剂分光光度法和AHMT分光光度法进行实验比对研究,分析样品放置时间、显色时间等因素对甲醛浓度检测结果的影响,优化检测条件。时间的控制对于确保检测结果的准确性至关重要,不同检测方法对时间的要求不同,分析结果表明,测定室温下保存的样品,酚试剂法最佳分析时间是采样后12 h内,最佳显色时间是15~30 min;AHMT法样品可存放7 d,最佳显色的时间应控制在5~60 min内。An experimental comparative study on two methods was conducted for determining indoor formaldehyde concentration:phenol reagent spectrophotometry and AHMT spectrophotometry,analyzing the effects of sample placement time,color development time,and other factors on the formaldehyde concentration detection results,and optimizing the detection conditions.The results showed that the optimal analysis time for the phenol reagent method for samples stored at room temperature was within 12 h after sampling,and the optimal color development time was 15 to 30 min,the AHMT method could be stored for 7 days,and the color development time should be controlled within 5 to 60 min.

关 键 词：室内空气 甲醛 显色时间 存放时间 

分 类 号：X830.2[环境科学与工程—环境工程]